How to validate an email using Jquery?
Dung Do Tien
Apr 10 2020
413
I have a form Sign Up and I need to validate email valid format. I am using indexOf() of @ and dot. But I think it is not a good solution. I have research someone says use regex but I need a demo for you or any suggestion.
<div class="col-md-2">
<div class="title">
<h1> Sign Up </h1>
</div>
<div class="content-form">
<div class="item">
<input class="input" id="txtName" type="text" placeholder ="Username" />
</div>
<div class="item">
<input class="input" id="txtPass" type="text" placeholder ="Password" />
</div>
<div class="item">
<input class="input" id="txtEmail" type="text" placeholder ="Email" />
</div>
</div>
<div class="button">
<button type="submit">Submit</button>
</button>
</div>
$("button").click(function(){
var email = $("#txtEmail").val();
if(email.indexOf(".") < 0 || email.indexOf("@") < 0){
alert('Email is not valid ("ex : example@gmail.com")');
}
});
Have 1 answer(s) found.
-
S0
Sandeep Kumar Apr 11 2020
It's that right. I think use regex to validate email is a good solution. If you don't' know regex you can read more here. Below is a function help you validate an email :
function isEmail(email) { var pattern = /^([a-zA-Z0-9_.+-])+\@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/; return pattern.test(email); }Explain pattern:
^ : Start with below
([a-zA-Z0-9_.+-]) : Contain text normal(a-z) or uppercasse(A-Z) or number(0-9) or shift minus or dot or plus or dash.
+\@ : Contan one @
(([a-zA-Z0-9-])+\.) : Contain text normal(a-z) or uppercasse(A-Z) or number(0-9) or plus and one dot(.).
+([a-zA-Z0-9]{2,4}) : Contain from 2 to 4 characters text normal(a-z) or uppercasse(A-Z) or number(0-9).
Use can store this function to common to reuseable and now to use this
$("button").click(function(){ var email = $("#txtEmail").val(); if(!isEmail(email)){ alert('Email is not valid ("ex : example@gmail.com")'); } });I hope it helpful for you.
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